Strap-tightening device



May 14, 1929. W. w. w'cmmsow STRAP TIGHTENING DEVICE Filed April. 26, 1928 In uenlor:

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ITE stars,

'WAJLLACLE ROBINSON, 0F PORTLAND,

SJIBAI TIGHTENING DEVICE Application filed April 26, 1928. fierial. No. FYI-3,095.

My invention relates to a strap tightening buckle comprising a base member, a lever pivotally engaging said base member, strap provided with a tied loop which on compasses bar of the lever at a spaced distance from the pivotal engagement of the lever with the base member and also encompasses a bar of the base member, said loop of sufilcient size to permit tull pivotal swing of the lever from a position overlying the rear oi the basemember (the negative position of the lever with reference to the in crease of strap tension) to a position overlying the front of said base member (the positive position of the lever) where said lever is preferably automatically locked by reason of the line of increased strap tension being positioned in a plane lying between the pivotal engagement point of said lever with the base member and the body bearing surface of said base member. The strap loop has an important function as a stabilizer of the base member as the lever is pivoted to its positive position i. e. it prevents the rear of the base member from riding up as the lever is pivoted and greatly facilitates the operation oi the strap tightening device. I provide means of adjusting and securing the strap (extending from the strap loop) to the front of the base member and said means may be a part of the base memher or an extrabuclrle secured to the base member. ll preterably provide a second strap to function as a lever pull over strap which may be operated inopposite directions and which greatly facilities thepivotingot the lever under increasing strap tension by its slipping contact with the end of the lever, said second strap being secured at one end to a part of the base member and the other end passing through an opening in the lever to emerge from the end of the lever as a tree strap end which. may be looped to further insure a finger grip. The second strap is preferably perforated at a point external to the lever end to provide a hole to be slipped over a tongue located at the front oi. the base member and provide a means of stopping and holding said lever at a point intermediate its full pivotal swing, when desired.

he second strap is weaved between bars of the base member of the buckle in a manner to entirely cover the body bearmg surface of the base member and is useful to protect the skin of a limb when the tightening device used as a tourniquet to control hemorrhage.

Both the base member and the lover of the tightening device are provided with transverse bars whose position are i1nportant in relation to the the two straps and the smooth working of the device.

The base member is provided with live transverse bars and the lever has two trans verse bars and the two straps are interwoven between the bars. The front bar of the base member preferably has a tongue projecting outward to engage a perforation in the second strap toprovide a means of stopping and holding the lever at an intermediate point in its pivotal swing and said front bar may have a pointed lip extending inward and bent downward to provide a friction lock for the end of the first strap after it has been passed about a given body and drawn taut.

The single point of the lip turned down indent-s into soi't flesh oil a limband increases the security of the strap lock and its locking range.

In the drawings-like characters indicate like parts.

My invention is not limited to exact construction shown.

Fig. 1 is a plan elevation of the simplest- :torm of my strap tightening device showing but one strap which is the contimiation of a tied strap loop encompassing a bar oi the lever and a bar of the base, then secured to the front of the base member and then passed under the end bar of the lever to provide a lever pull over function.

Fig. 2 is a section of Fig. 1 with strap shown in full on the line XX showing the lever in negative position as in Fig. 1 and the free end of the single strap passed beneath the end bar of the lever, where it may function as a lever pull over strap. The friction strap lock weaving is shown at front of base.

Fig. 3 is a section of Fig. 1 with the lever pivoted to decrease the strap length, causing increase of strap tension about a given body. lever now occupying the positive and locked posit-ion to which it is pulled by the free strap end having a slipping cont-act with the end bar of the lever. Lever automatically locked because loop tension is below pivot point.

Fig. 4 is a section when the base member is provided with a projecting tongue at its end bar of the lever to terminate as a lever operating strap, which has a perforation to engage a tongue 'of'the base member and provide a means of stopping and holding the lever at an intermediate point in its pivotal swing, (shown in dotted outline).

1 is the base member.

-2 is the lever pivota-lly engaging 1 at a point outside the plane of strap tension.

3 is the front bar of 1 and which is preferably provided with a projecting tongue 8 to engage perforation 16 of second strap 15.

' 3 has preferably apointed lip 20 which may be bent down as required.

1 is the second bar of the base member 1 about which the free strap end 13 may be passed from within outward then under point 20 of bar 3 to secure a frictional strap lock. See Figs. 1, 2, 3 and 4 or bar 4 may be used as a fixed point to secure extra buckle 19 to as in Fig. 5 by strap 15.

5 is the purchase bar of base 1 about which second strap 15 passes and thence to and under end bar 9 of the lever to provide a slipping pull over lever strap which operates in both directions. "6 is a bar of 1 about which strap is secured in Fig, 4 by a rivet 18 one form of my device;

7 is the end bar ofbase member 1 which is encompassed by the strap loop formed by -straps 1 1 and 14 and fixed to free strap 13, said strap loop 14 and 1 1 also encompasses bar of the lever 2.

8 isthe tongue of base 1 which engages perforation 16 of strap to stop and hold lever 2 at'an intermediate point in its pivotal swing.

9 is the end bar of lever 2 about which pull over lever strap 15 slips.

10 is the proximal bar of lever 2 positioned at a spaced distance from the pivotal 'point of 2 with 1 and is encompassed by the strap loop together with bar 7 of base 1.

11 is the upturned ear each side ofl perforated to engage lever 2 at a point external to the body bearing surface of 1 sulficiently to ensure automatic locking of 2.

under full increase of tension of strap 13.

12 is the perforation of car 11. 13 is the strap looped at one end to encompass a bar of the lever 2 and an end, bar of base 1 then fixed byrivet 17 to provide a constant loop of sufficient size to insure full pivotal swing of lever 2 until it automatically locks. 13 extends as a free strap end to engage the front of base 1 or extra buckle 19 whichever of the two forms are used.

1 1 and 14 are the two parts of the strap 13 which forms the strap loop which encompasses bar 10 of the lever 2 and bar 7 of 1 and thus provides a stabilizer of the ti ghtening device, since the end of 1 namely bar 7 cannot elevate above 11 in tension.

15 is the second strap used as a pull over lever strap and perforated at 16 to engage tongue 8. 15 covers the body bearing surface of 1 and offers protection from metal against bare skin, Strap 15 is fixed to some art of 1 by a rivet and in one form seen in lig. 5 strap 15 secures an extra buckle 19. 15 is a loop formed for finger.

16 is a perforation in 15 to engage 8 of base 1.

17 is a rivet used to fix 13 upon itself to form a strap loop 11* and 14".

18 is the rivet used to secure strap 15 to base 1.

19 is the extra buckle which may be used. 7 20 is the pointed lip of the inside of bar 3 of 1 which when bent downward forms a. frictional strap lock for strap 13 in which case extra buckle 19 is eliminated.

I claim:

1.111 a device of the character described, a strap tightening device comprising in combination a. base member, a lever pivoially engaging said base member intermediate the ends thereof. a strap engaging said lever at a spaced distance from its pivotal engagement with said base by means of a tied loop, a portion of said strap then passing through an opening in said base member to be passed about a given body and adjustably and lockingly engage said base member whereby said strap may be drawn taut through said base member and fastened and whereby said lever may be pivoted to further increase strap tension about said given body and means of locking said lever at a point of increased strap tension.

2. A strap tightening device comprising a base member, a lever pivotally engaging said base member, a strap provided with a tied loop at one end, with the other end of said strap free to be passed about a given body and engage said base member. drawn taut and secured. said tied loop encompassing a bar of the lever and also a bar of the base member thereby acting as a stabilizer for the base member as the lever is swung to increase strap tension about said given body and means of locking said lever at a point of increased strap tension.

8. A strap tightening device comprising a base member, a lever pivotally engaging said base member intermediate the ends ion thereof, a strap secured to said base member and said lever by means of a loop of said strap tied upon itself to form a loop of sullicient size to permit full pivotal swing l'iody to engage said base member, drawi'r taut and secured to said base member, whereby said strap is always an integral part of said tightening device by means of said tied strap loop and means of locking said lever at a point of increased strap tension.

l. A strap tightening device comprising a base member, a lever pivotally engaging said base member, a. strap having a flexible loop at one end of fixed sire, said loop encompassing a bar of the lever at a spaced distance from its pivotal engagement with said'base also a bar of said base member, said loop of sufficient size to permit full pivotal swing of said lever from one end of the base member to the other end of said base member, said strap continuing from said loop as a free strap end which may be passed about a given body and engage said base member by passing about a purchase bar to form a frictional strap lock whereby said strap may be drawn taut and secured and means of locking said lever at a point of increased strap tension.

5. A strap tightening device comprising a base member, a lever pivotally engaging said base member intermediate the ends thereof, a strap having a tied loop at one end which encompasses a bar of the lever and. a bar of the base member, said strap continuing from said loop as a single strap free to be passed about a given body and secured to a part of said tightening device, a second strap secured by one end to said base member the other end passing beneath an end bar of said lever to emerge a free end strap designed to function as a. lever pull over strap and means of locking said lever at a point of increased strap tension.

6. A. strap tightening device comprising a base member provided with four transverse bars, a lever pivotally engaging said base member at a point intermediate the two centrally positioned bars, a strap having. a tied loop at one end which encompasses bar of the lever and an end bar of the base, said strap continuing from said loop as a single strap to be passed. about a given body and secured about a transverse bar of said base in such a manner that said strap bears upon itself and provides a friction lock and means of locking said lever at a point of in creased strap tension.

7. A strap tightening device comprising a base member, a lever pivotally engaging said base member intermediate the ends thereof, a strap provided with a strap loo at one end said loop encompassing a bar of the lever and a bar of the base member and continuing as a single strap to be passed about a given body and be drawn taut and secured to a buckle, a second strap secured to said buckle and to said base member and extended to cover the body bearing surface of the base member and thence extended to pass through an opening in said lever to emerge as a freeend to provide a pull. over lever strap to pivot said lever against increased strap tension, said second strap perforated to engage a tongue projecting from said base member whereby said lever may be stopped and held at an intern'iediate point in its pivotal swing.

8. A strap tightening device comprising a base member, a lever pivotally engaging said base member intermediate the ends thereof, a strap provided with a loop at one end which encompasses a bar of the lever at a spaced distance from its pivotal engage ment with said base member, said loop also encompassing a bar of the base member, said strap continuing as a single strap to be passed about a given body and drawn taut and secured to said base member whereby the lever may be pivoted to increase strap tension. A second strap secured to said base member at one end of said strap the other end of said second strap passing through an opening in. the lever distal to its strap loop encompassed bar said second strap emerging as a free end to provide a lever pull over strap to facilitate the pivoting of the lever against increased strap tension about said given body, and means of locking the lever at a point of increased strap tension.

9. A strap tightening device comprising a base member having five transverse bars and two upturned ears each side of said base member and positioned intermediate the ends of said base member, said ears perforated, a lever pivotally engaging said base member through engagement with said upturned ears of said base member, a strap provided with a loop at one end, said loop encompassing a transverse bar of said lever at a spaced distance from its pivotal. point, said loop also enconnoassing a transverse rear end bar of said base member, said loop formed of sufiicient size to permit full pivotal swing of said lever from one end of the base member to the other end of the base member, said loop fixed to said strap which is extended to provide a means of passing about a given body to be secured to said base member in a taut state, whereby said lever may be pivoted to increase strap tension about said given body and means of locking said lever at point of greatest increase of strap tension. The two front bars of said base member providing a friction strap lock for said strap after it has been passed about said given body, a second strap secured to a transverse bar of said base member by one end the other. end of said strap passing through an opening in the end of said lever to emerge as a pull over lever strap end to facilitate the pivoting of said lever against strap tension. 7

10; In a device of the character described comprising a base member, a lever pivotally engaging said base member, a strap engaging said base member and said lever by means of a tied loop ot'suflicient size to per- WALLACE W. ROBINSON. 

